Check & Adjust
FlexLine, 237
During the manufacturing process, the instrument errors are carefully determined
and set to zero. As mentioned, these errors can change and it is highly recommended
to redetermine them in the following situations:
•
Before the instrument is used for the first time.
•
Before every high precision survey.
•
After rough or long periods of transport.
•
After long periods of work or storage.
•
If the temperature difference between current environment and the temperature
at the last calibration is more than 10°C (18°F).
11.2
Preparation
Before determining the instrument errors, level-up the instrument using
the electronic level. The
Level/Plummet
is the first screen to appear after
turning on the instrument.
The tribrach, the tripod and the ground should be very stable and secure
from vibrations or other disturbances.
The instrument should be protected from direct sunlight in order to avoid
thermal expansion on one side only.
